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Finding the Fourth Proportional to 1,798.71, 2,697.91 and 628.41

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Solution

The fourth proportional to 1,798.71, 2,697.91 and 628.41 is: 942.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.71 : 2,697.91 = 628.41 : x
  2. Step 2: Convert to fraction form
    1,798.71/2,697.91 = 628.41/x
  3. Step 3: Cross multiply
    1,798.71x = 2,697.91 × 628.41
  4. Step 4: Simplify right side
    1,798.71x = 1,695,386.99
  5. Step 5: Solve for x
    x = 1,695,386.99/1,798.71
  6. Step 6: Final answer
    x = 942.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.